docker swarm unlock-key
Manage the unlock key
Swarm This command works with the Swarm orchestrator.
$ docker swarm unlock-key [OPTIONS]
Refer to the options section for an overview of available
OPTIONS for this command.
An unlock key is a secret key needed to unlock a manager after its Docker daemon restarts. These keys are only used when the autolock feature is enabled for the swarm.
You can view or rotate the unlock key using
swarm unlock-key. To view the key,
docker swarm unlock-key command without any arguments:
This is a cluster management command, and must be executed on a swarm manager node. To learn about managers and workers, refer to the Swarm mode section in the documentation.
For example uses of this command, refer to the examples section below.
||Only display token|
||Rotate unlock key|
$ docker swarm unlock-key To unlock a swarm manager after it restarts, run the `docker swarm unlock` command and provide the following key: SWMKEY-1-fySn8TY4w5lKcWcJPIpKufejh9hxx5KYwx6XZigx3Q4 Please remember to store this key in a password manager, since without it you will not be able to restart the manager.
--rotate flag to rotate the unlock key to a new, randomly-generated
$ docker swarm unlock-key --rotate Successfully rotated manager unlock key. To unlock a swarm manager after it restarts, run the `docker swarm unlock` command and provide the following key: SWMKEY-1-7c37Cc8654o6p38HnroywCi19pllOnGtbdZEgtKxZu8 Please remember to store this key in a password manager, since without it you will not be able to restart the manager.
--quiet) flag only prints the key:
$ docker swarm unlock-key -q SWMKEY-1-7c37Cc8654o6p38HnroywCi19pllOnGtbdZEgtKxZu8
This flag rotates the unlock key, replacing it with a new randomly-generated key. The old unlock key will no longer be accepted.
Only print the unlock key, without instructions.
|docker swarm||Manage Swarm|
|docker swarm ca||Display and rotate the root CA|
|docker swarm init||Initialize a swarm|
|docker swarm join||Join a swarm as a node and/or manager|
|docker swarm join-token||Manage join tokens|
|docker swarm leave||Leave the swarm|
|docker swarm unlock||Unlock swarm|
|docker swarm unlock-key||Manage the unlock key|
|docker swarm update||Update the swarm|